Pneumatic tire.



' To all whom it may concern:

UNITED srnrnsulrafrn NT OFFICE;

ALEXANDER F. BRYCE,

or CHICAGO, ILLINoIs.

PNEUMATIC -T|RE.

Specification of Letters Patent.

l Patented March 12, 19o-.

Application led January 30, 1906. Serial No. 298,624.

' Be it known that I, ALEXANDERF. Baron, acitizen of the United States, residlng at Chime Illinols, have invented a certain new and useful Improvement in Pneumatic Tires, of

which the following 1s a specification.

i for the relates to pneumatic tires of different types, construct apneuinvention Wheels of vehicles and has forits vobjects to -m'atic tire with compartments separate and each. of

distinct one -i'rom theother and which can b e brought into condition to serve Aas the receiver forV air under pressure .to main- "under pressu e by ,give each compartment tain ,theti're in its expanded form; to enable the pneumatic tire to` be lled independently with air under preseac "compartment o yvhen a compartment has its wall expanded; t`o\eonstruct an. expansible and contractlble connection leading `from the compartment ofthe tire to the supply-tube for air under pressure;. to connect the compartments of a pneumatitire with the supply-tube for air a conduit constructed with bellows ds for expansion and contraction, and 'o eral elements entering'irlto the formation of `the.tire as a whole.

In the drawings, Figure 1` is a detail in sectional eleVa-tion of the pneumatic tire of the invention ,j Fig. 2, a cross-section showing the innermost compartment with its Wall xpanded to furnish the cushion; Fig'. 3, a cross.

section showing the innermost and intermediate wall expanded for the intermediate wall to furnish the cushion; Fig. 4, a crosssection showing' the walls'of all ments expandcd'l'or the outermost Wall to furnish the cushion; l."ig. 5, a detail in section showing the collapsible and expansible conduit partiallyclosed, and Fig. 6 a deo, in the county of Cook and State of `terior chamber or the tire under ex-` panslon; to furnish a pneumatic tire with' can be utilized to Improve generally the sev-n tail in section showing the expansible arid collapsible conduit in an expanded condition. l A complete Wheel is not shown; but it is to be understood that the wheel is to be constructed in anyusual and Well-known mannerwith a hub and spokes and a supporting circumferential rim 1 of Wood, metal, or other suitable material. The4 rim 1 recelves'and supportsl the penumatic tire 2, formed of rubber and of' any usual. and well-known. form' of construction for pneumatic tirs. The incated therein in the form shown three diaphra s or partitions 3, 4, and 5, each of `Whic is attached at the side edges to the in-f nler face ofthe wall of the tire or tube 2;-as at t e diap vcan be ex ended to closely hug or impinge the inner 'ace 'of the tube of the adjoining diaphragm or partitiom The diaphragms or partitions, 4, and 5 are made of rubber o'r other material oa able of being expanded under pressure, vso that space of thetube 2 has looint 6 or otherwise, s o as t0 have each agm or partition form a Wall whichv or tire 2 or the face i each diaphragm or partition becomes the 4wall of an inclosing chamber or 'compartment'for receiving pressure.

.The diaphragm or partition 4 andthe outer diaphragm or partition 5 each has a collapsible and expansible conduit for admitting air under pressure'to the compartments or chambers formed between titions 3 vand 4 and the diaphi agms or partitions 4 and 5. The conduit is preferabl formed as shown in Figs. 5 and 6, and eac4 conduit consists of disks 7, expansible material joined at their eriphery so as to be air-tight and leave an edpge'S, and

the diaphragme or par-l of rubber or otherv the faces of the two'adjoining disks or Walls 7 are tightly cemented one Ito the other at their center 9, and through the center o f the several disks or walls is a hole or perforation 1 0, furnishing a passage for air under pressure. Tl 1e conduit for the diaphragm or partition 4 has its center attached to the face of the diaphragm orpartition 4 and to the face each side 1 :o5 and in the diaphragme 4 and 5 and the ex' of the diaphragm or partition 5 on and to the face of the external tire or tube 2,v ternal tire or tube2 is a hole or erforation'in line with the hole or perforatlon 1Q in the Vdisks or walls 7 of the conduitf; The conduit for the diaphragm 5 is attached at its center to the face of the dialphragm and to the face .Y e 2, and the diaphragm' of the outer tire or tu IOC - partment vor chamber pertoratio'nin line with thc hoie or perforation 10 in the disks or walls 7 of the con.- duit. The conduit for the diaphragm or p`artition 4 is in two divisions, while the conduit for the diaphragmor partition 5' is in one division ,and-, as shown, each division for the respective conduits is formed of six disks or walls; but it will be understood that where more vcompartments `for receiving pressure are desired conduits of three, tour, or more divisions will'be required, such conduits having the construction of the single-division conduit shown in Figs. 5 and 6. The con* duit for the diaphragm or partition 4 is in communication with a supply-tube 11 for air under pressure, and the/conduit for the diaphragm or partition 5 is in communication with a supply-tube 12 for air under ressure. The compartment betwee'n'thc diap'ragm or partition 5 and the exterior tire or tube 2 is in communication with a tube 13 for air under ressure. The'tubes 11, 12, and 1.3 can be or any usual and welilknown form of construction for vtubes of' pneumatic tires, and each tube is closed by a cap 14, as usual.

' The diaphragm or partition 3 and thediaphragm or partition tiurnishl between them compartment or chamber 15 for receiving air under pressure.` The diaphragm or partition4 and the diaphragm orpartition 5 form between them a compartment or chamber 16 for receiving air under pressure. The diaphragm 5 and the exterior tire or tube 2 form between them a compartment or chamber 1,7 for receiving air un der pressure.

Air in rler pressure is supplied to the com-Y through the expansible and collapsible conduit between the diaphragme or partitions 4 and 5 and the diaphragm or partition 5 and the exterior'tube or tire 2, and the air acts to expand the diaphragm or partition 3 for such diaphragm or partition to closelyv hug or impingeavainst the inner tace of the exterior tire or tuhe and 'for the diaphragme or par titions 4 and 5 tofcontact each other with the diaphragm or partition 5 in contact with the inner tace of the exterior tire or tube, as shown in Fig. 2, except that in Fig. 2 the diaphragins 4- and 5 are separated somewhat from their natural condition in order to show the compartments loand 17 more clearly, it

being understood that when air under pressure is admitted into the compartment or chamber 15 the diaphragms 3'-, 4, and 5 will be 'forced outward and not separated for the diaphragms or partitions 4 and r5, as shown in Fig. 2.

Air under pressure is admitted to the compartincnt or chamber 16 through the ex pansible and contractible conduit for the diaprhagni 5 from l,the tube 12 for the air under pressure to expand the diaphragms/i and 5 i and have the diaphragms hug or closelyim 15 from the tube 11-| pinge against the diaphragm or partition 3 and the exterior tire lor tube 2, as shown in Fig. 3, except that in Fig. 3 the diaphragm or partition 5 is not shown closed. down, but

is leftseparated from the tube or tire Z in ory der to more clearly show the compartment or.

chamber 17 betwen the diaphragm and the.

tire or tube. It will thus be seen that whenthe 'diaphragm or partition 4 is expanded, as. shown in Fig. 3, the division ci` the conduit between the diaphragme or partitions 4 and '5 is expanded, so that it is in the (condition shown in Fig. 3, while the division of theconduit between the diaphragm or partition 5 and the exterior tire or tube is `-coilapsed- The conduit between the diaphragmsor partitions 4 and 5 expands with the expansion of the diaphragm or partition 4 and remains unbroken, .so that no leakage of ai r `under pressure can escape from when sai l compartment or chamber contains the air-cushion, and when p expanded, as shown in Fig.' 3, the diaphragm or= partition 4 and the diaphragm or part1tion5, iniconnection with the -exterior tire or tube, forms a complete pneumatic tube.

Air under pressure is supplied from thd.

the chamber` 16h85 tube 13 to the compartment or chamber 17 and the air so supplied will expand. the dia. phragm or partition 5 into-v the Aco'riditioni shownin Fig. 4', except that the diaphragme y3, 4, and should 'be in contact with each other instead of having the diaphral, 5

separated, as in Fig.l 4, such separation.- being for the purpose of more clearly showing the space forming the compartment or chamber 16 when the diaphragms are all expanded or rlOO lforced outward. The conduit between -the diaphragms 4 and 5 will be collapsed or.

-folded together when the diaphragm vforms the wall of the air-compartment or chamber, as shown in Fig."4, and the conduit between. `:the diaphragm 5 and the external tire or tube will be expanded,.as shown in FigI 4,

such expansion maintaining a connection `between the diaphragm or'partition 5 and the exterior tire or ltube,by whichthe air under pressure will be held in the. compartment or chamber 17 and form the, air-cushion.,

The tire of the present invention furnishes three distinct and separate compartments or chambers for air under pressure, each oi' which when in use will constitute an aircushion. It will thus be seen that in case of a rupture of the exterior tire or tube and the diaphragm or partition 8 the diaphragmor partition 4 can. be expanded and furnish a closed compartment or chamberv for thev air under pressure, maintaining the tire in operativecondition and against collapsing, and in case the diaphragmpr partition 4is rup tured or rendered inoperative from any cause the diaphragm or partition 5 can be expand edy and furnish 'a compartment or chamber 17 for air under pressure to serve as an* air- 'piessure compartment or chamber as a receiver of air C under pressure to hold the tire as a whole iii its expanded condition. and contractible conduit Will give and take, according to the position of' the diaphragm or partition to which it is attached, and thus maintain a sealed attachment for the conduit an o'uter tube, a plurality of diaphra Tms di- With its diaphragm, which seal remains uiibroken no matter whether the conduit is folded or expanded. The conduit furnishes a connection for supplying air to the several compartments or-chambers, and as the con g duit is free to fold and expand withI the move- `ment of the diaphragm or partition it will i be seen that the conduit will remain intact and rmly and securely attached in place irrespective of the osition ofthe diaphragm or partitioinhthus insuring a perfect and reliable means for supplying air under pressure to the several compartments'of the tire as a whole.

Itwill be understood that the diaphragms or partitions forming separate compartments or chambers for-receiving pressure, inconnection with t. conduit capable of expanding and contracting, can be utilized iii pneumatic tires having a tube within the outer tube, as in the construction of some forms of pneumatic tires. the cdllapsible and cxpansible conduit need not necessarily be be folded or expanded without destroying tween the conduit and the diaphragme.

What I claim as new, aiidflesirc to secure i by Letters Patent, is-e l'. In a pneumatic tire, the combination ol an outer tube, a plurality of diaphragiiis dividing the interior of the tube into a 'plurality of compartments for containing pressure, and a collapsible andl cxpansible conduit admitiiig pressure to a compartment and expandingthe diaphragm, substantially as described. g

2. ln a pneumatic tire, the combination oi' T he expansible .s

It will also be understood that f bellows i`olding, but should be of sonic tlexibleinaterial that can ing the diaphragm, substantially as vdea plurality of collapsible and expansible conl duits, each conduit having a hole for admitting pressure to a compartment and expand-- 3. In a pneumatic tire, the combination of an outer tube', a plurality of diaphragms dii l l i scribed.

vidiiig the interior of the tube into a plurality of compartments for containing pressure, a plurality of collapsible and expansiltle con- ,l duits, each conduit having a hole for'adniitting pressure to/a compartment and expandi110' the diaphragm, and a pressure-supply l l l tu ic for each conduit and diaphragm, subl stantiallyas described.

l 4. In a pneumatic tire, the combination of v iding the interior of the tube into a p urality et compartments f or containing pressure, and a conduit bellowafoldable for admittingA pres- 5` ln a pneumatic tire, the coinbination'of 'an outer tube, a .plurality of diaphragme Ad i'- a plurality oil conduits belloWs-foldable, each conduit having a hole for admitting pressure phragni, substantially as described l 6. ln a pneumatic tire, tlie'coi-nbinationof l an outer tube,'a plurality of diaphragins diriding the interior oi' the tube into a plurality of coinlnirtiiicnts ier containing pressure, a pluralityol conduits 'bellows-ioldable, each ,i conduit having a hole for admitting pressure to a conipartirient and' expanding the'diapliiagin, and a pressure-supply tube for each conduit and diaphragm, substantially as described.

7A In apneumatic tire, the combination of an outer tube, a plurality of diai'ihijanis dia plurality of conduits l)ellowsefoldablefor ad niitting pressure. to a compartment and eX- nient, and means for sup'plyii'igpressure to cach conduit. and diaphragm .I mlependently,

substantiallyasdesci'ibed. e

ALEXANDER F. BRYCE.

l'l'itncsses: l f

OscAn W. Boni),

- "A'Liucu llmiiriaic..A

viding the interior ot|` the tube iii'to apluralii-yA oi' compartments for containing pressure, andto a compartment and expanding the dia-` viding the iiiteriorof the tube into a p urality oi compartments for containing pressure,

paiiding tlu` diapbi'agi'ns ofthe conipart sure to a coinpartnieiit and expanding theA 'E diaphragm, substantially as described.

les 

